Just to take a jump back a bit here in the thread, the rectangular hole to the left of the Boot/Trunk.
I don't think it is actually for a warning triangle/first aid kit as these are stored in a tool roll, just under the lip of the tailgate, on the UK spec ones, so I would imagine that the Euro spec ones are the same. (These appear to be supplied as standard)
All that is in the space is the "Special Tool" which seems to be just a 10mm tapered spanner at one end and a flat bladed screwdriver at the other. (For removing front grill and wheel hub caps)
Could well be that they have intended this space for fittment of an autochanger but even salesman is unsure! :?: